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Bulletin issued at 04:02 HKT 22/Feb/2018

At 4 a.m. at the Hong Kong Observatory the air temperature was 17 degrees Celsius and the relative humidity 85 per cent.

The air temperatures at other places were:

King's Park 16 degrees;
Wong Chuk Hang 17 degrees;
Ta Kwu Ling 15 degrees;
Lau Fau Shan 15 degrees;
Tai Po 16 degrees;
Sha Tin 16 degrees;
Tuen Mun 17 degrees;
Tseung Kwan O 15 degrees;
Sai Kung 16 degrees;
Cheung Chau 16 degrees;
Chek Lap Kok 17 degrees;
Tsing Yi 17 degrees;
Shek Kong 16 degrees;
Tsuen Wan Ho Koon 16 degrees;
Tsuen Wan Shing Mun Valley 17 degrees;
Hong Kong Park 16 degrees;
Shau Kei Wan 16 degrees;
Kowloon City 16 degrees;
Happy Valley 17 degrees;
Wong Tai Sin 16 degrees;
Stanley 16 degrees;
Kwun Tong 15 degrees;
Sham Shui Po 17 degrees;
Kai Tak Runway Park 17 degrees;
Yuen Long Park 16 degrees;
Tai Mei Tuk 16 degrees.


Note: The data above is provisional. Only limited data validation has been carried out.


Climatological Information for 22 Feb

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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Bulletin updated at 03:45 HKT 22/Feb/2018

Here is the latest weather bulletin issued by the Hong Kong Observatory.

A fresh easterly airstream is affecting the coast of Guangdong. The cold front over inland Guangdong will reach the coastal areas during the day.

Weather forecast for today

Cloudy with a few rain patches. Temperatures lingering around 17 degrees at first. Moderate to fresh easterly winds, becoming northerlies and temperature dropping significantly. Temperatures will fall to around 14 degrees at night in the urban areas, and a couple of degrees lower in the New Territories.

Outlook : Rather cool on Friday morning. Weather will improve gradually in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 22/02/2018; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 21/Feb/2018

GALE WARNING AREAS: KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS AND BALINTANG.

GENERAL SITUATION AT 210900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS. COLD FRONT 23N 107E 22N 111E 25N 118E S SLOWLY.

MARINE FORECAST FOR 24 HOURS FROM 211300 UTC:

HONG KONG= E 5-6, N 6 LATER. RAIN PATCHES. SEA 2-3 M. TEMP 18-14 C. =
KWANGTUNG= N TO NE 6-7, UP TO 8 IN E. DOWN TO 500 M IN FOG OR RAIN PATCHES IN W AT FIRST. SEA 3-4 M, UP TO 6 M IN E. SWELL NE UP TO 2 M. =
TAIWAN STRAIT= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
BASHI= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
PRATAS= NE 6-7, OCNL 8. RAIN PATCHES. SEA UP TO 6 M. SWELL NE 2 M. =
BALINTANG= NE 6-7, OCNL 8. LGT RAIN PATCHES. SEA UP TO 6 M. SWELL NE 2 M. =
SCARBOROUGH= NE 5-6. FINE. SEA 2-3 M. SWELL NE UP TO 2 M. =
PARACEL= E TO NE 5. DOWN TO 500 M IN FOG OR RAIN PATCHES IN N AT FIRST. SEA 2 M. =
TONKIN= E 4-5, BEC N 6. DOWN TO 500 M IN FOG OR RAIN PATCHES AT FIRST. SEA UP TO 2 M, BEC 3 M. =
DANANG= E 4-5, N 6 LATER. DOWN TO 500 M IN FOG OR RAIN PATCHES IN N AT FIRST. SEA UP TO 2 M, 3 M LATER. =
NNNN
Abbreviations:
KT, VRB, SLW, FRQ - knot, variable, slow, frequent STNR, QSTNR, C - stationary, quasi-stationary, degrees celsius WKN, INTSF, INTST, NC - weaken, intensify, intensity, no change LGT, ISOL, SCT, OCNL - light, isolated, scattered, occasional CLD, DZ, TS - cloudy, drizzle, thunderstorm

The date and time are specified by a 6-digit number DDHHMM. DD stands for the day of month, HH represents the hour while MM indicates the minute in UTC.


  • Map showing the 10 forecast areas
  • Tidal Information

    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

    Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 03:30 HKT 22/Feb/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 22 February 2018

    Warnings:
    Gale force winds in Nan'ao. Strong winds in Hong Kong adjacent waters, Shanwei, south of Hong Kong and Shangchuan Dao.

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters. A cold front will reach the region during the day.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6, occasionally force 7, becoming north force 6.
    A few rain patches.
    Moderate to rough seas.

    Nan'ao:
    Northeast force 6 to 7, occasionally force 8.
    Rough to very rough seas.

    Shanwei and South of Hong Kong:
    North to northeast force 6 to 7.
    Rough seas.

    Shangchuan Dao:
    North to northeast force 6.
    Rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 6 to 7.

    Latest reports from south China coastal weather stations
    --------------------------------------------------------

    Waglan Island Wind east-northeast force 6
      Visibility 18 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 30 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 7

    Macau Wind east-northeast force 3
      Visibility 11 Kilometres

    Xisha Wind east-northeast force 1
      Visibility 28 Kilometres

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 22/FEB/2018
    (Next update at 9:00-9:30 HKT 22/FEB/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB OFFSHORE.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.  BESIDES, A COLD FRONT WILL
     REACH THE REGION DURING THE DAY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
                  BEC 360/10-15
       OFFSHORE:  090/15-20, OCNL 25
                  BEC 360/15-20, OCNL 25               17-14
   B.   2000 FT:  090/15, OCNL 25                      12-10
   C.   5000 FT:  180/10                               12
   D.  10000 FT:  260/20                               4
   E.  18000 FT:  260/45                               MS11
   F.  24000 FT:  240/55                               MS22
   G.  30000 FT:  260/85                               MS34
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2500 - 3700 FT.
   I. WEATHER       : 
      CLOUDY WITH A FEW RAIN AND MIST PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT  SCT 2500 FT  BKN 8000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 2500 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 7000, 8400 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 17 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, BECOMING
     MODERATE TO FRESH NORTHERLY WINDS.  CLOUDY WITH
     A FEW RAIN PATCHES.=

    ===================================================================
Note: The forecast could be updated before the next issue time 
whenever there is newly expected occurrence or non-occurrence 
of significant weather as described below which may be hazardous 
to aircraft within 100-km radius of Hong Kong:

(a) Change of the tropical cyclone category
(b) Strong, Gale, Storm, and Hurricane force winds
(c) Thunderstorm/CBs
(d) Severe gusts
(e) Severe turbulence
(f) Significant low stratus
(g) Fog or thick haze/sandstorm/duststorm 
    causing significant reduction of visibility
(h) Volcanic ash
(i) Radioactive cloud
===================================================================
    Aviation Weather Observation and Forecast Information for Hong Kong International Airport
    To know more about clouds, please see Commonly observed clouds in Hong Kong.

    sigmet
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    Significant Weather Information (SIGMET)

    The Airport Meteorological Office is responsible for monitoring hazardous weather and phenomena in the atmosphere that may affect the safety of aircraft operations within a designated airspace over the northern part of the South China Sea. Weather forecasters at the Airport Meteorological Office issues SIGMET information when hazardous weather and phenomena in the atmosphere such as thunderstorms, tropical cyclones, turbulence, icing occur or are expected to occur in the airspace.

    The latest significant weather information
    issued by the Hong Kong Observatory at 10:30 HKT on 10 Feb 18

    VHHK SIGMET 1 VALID 100230/100630 VHHH- VHHK HONG KONG FIR SEV TURB OBS WI N2000 E11636 - N1742 E11448 - N2000 E11448 - N2000 E11636 FL300/400 MOV E 05KT NC=

    Please click here for more about the SIGMET

    Tropical Cyclone Warning
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    Tropical Cyclone Warning

    There is no tropical cyclone warning signal.

    For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.

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    TROPICAL CYCLONE WARNING FOR SHIPPING
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    Tropical Cyclone Warning for Shipping

    There is no tropical cyclone warning for shipping*.




    *Tropical cyclone warnings for shipping are issued by the Hong Kong Observatory for tropical cyclones located within the area bounded by 105E and 125E , 10N and 30N.




    For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.

    YESTERDAY'S WEATHER AND RADIATION LEVEL Skip to main content
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    Yesterday's Weather and Radiation Level

    Bulletin issued at 00:15 HKT 22/Feb/2018 
    HKO Readings & Radiation Level

Yesterday's Weather and Radiation Level:
------------------------------------------------------

Hong Kong Observatory
Maximum Air Temperature                     19.4 C
Minimum Air Temperature                     16.7 C
Grass Minimum Temperature                   16.6 C
Relative Humidity                        76 - 90 Percent
Rainfall                                      trace 
Total rainfall since 1st January            62.2 mm
Against an average of                       65.6 mm

Other Stations                Min                  Max
King's Park                  16.1 C               19.3 C
Wong Chuk Hang               16.6 C               20.7 C
Ta Kwu Ling                  15.5 C               19.9 C
Lau Fau Shan                 15.8 C               20.4 C
Tai Po                       16.1 C               18.7 C
Sha Tin                      15.9 C               19.5 C
Tuen Mun                     16.9 C               20.1 C
Tseung Kwan O                15.3 C               18.2 C
Sai Kung                     15.9 C               18.7 C
Cheung Chau                  15.9 C               19.9 C
Chek Lap Kok                 17.1 C               21.9 C
Tsing Yi                     16.6 C               20.9 C
Shek Kong                    16.6 C               21.9 C
Tsuen Wan Ho Koon            15.5 C               20.3 C
Tsuen Wan Shing Mun Valley   16.2 C               20.6 C
Hong Kong Park               16.5 C               19.1 C
Shau Kei Wan                 15.3 C               18.1 C
Kowloon City                 15.7 C               20.3 C
Happy Valley                 16.6 C               19.8 C
Wong Tai Sin                 15.8 C               20.4 C
Stanley                      15.7 C               18.4 C
Kwun Tong                    15.4 C               18.6 C
Sham Shui Po                 16.9 C               20.9 C
Kai Tak Runway Park          16.4 C               19.0 C
Yuen Long Park               16.9 C               21.8 C
Tai Mei Tuk               15.3 C               19.9 C

Duration of sunshine (King's Park):              0 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
Sea surface temperature (Waglan Island):        16.3 C 

Yesterday's (21 Feb 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 to
0.15 microsievert per hour.  These are within the normal
range of fluctuation of the background radiation level in
Hong Kong (see Note). The average dose rates measured at the
radiation monitoring stations over various parts of the
territory were as follows :

Station                     Yesterday's average
                            (microsievert/hour)
Ping Chau                           0.08
Tap Mun                             0.09
Kat O                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.15

Note

      

    1. From readings taken at various locations in Hong Kong in the
past, the hourly mean ambient gamma radiation dose rate may
vary between 0.06 and 0.3 microsievert per hour. (1
microsievert = 0.000001 sievert = 0.001 millisievert)

    2. Temporal variations are generally caused by changes in
meteorological conditions such as rainfall, wind and
barometric pressure.

    3. Spatial variations are generally caused by differences in
the radioactive content of local rock and soil.

    4. The data displayed is provisional. Only limited data
validation has been carried out.
    Climatological Information for 21 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <22 Feb 2018> 

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